Good point. I think most of the pitch here is to stakeholders and hiring managers, since they frame it explicitly as "buying senior-engineer futures at today's price,” but I also think they’re wrong that “your seniors will hate it.” IMO that depends entirely on what kind of seniors you’ve brought onto the team.
If they’re motivated entirely by money or personal accomplishment, or they don’t play well with other developers, like the type we’ve all met who are eventually siloed on smaller projects, then yes I’d agree. They’ll hate it. But they never wanted to mentor juniors in the first place. I’d call those mid-level engineers.
None of the true seniors I’ve known could grind through repetitive agentic workflows daily without eventually hitting a brick wall of boredom. And I think most who gave it a little thought would realize this in advance. The emptiness and tedium of that work alone would be deal breaker. The only exception might be former seniors who are burned out and just want to retire ASAP, to do literally anything else.
But otherwise I don’t think most seniors want this scenario to play out. At all.